Size details: the drill wire brush is 1/4 inch hex shank fits for power drills, impact drivers, die grinders, the overall length is about 4-3/4 inch, and 8 kinds of width includes 8, 9, 10, 11, 13, 15, 17 and 19 mm, so you can choose the suitable size to use according to your needs Multiple functions: this bore cleaning brush can access into narrow holes and confined areas easily, designed for use on right angle grinders, also suitable for cleaning steel parts, machinery, the unfinished metal parts, paint stains, without damaging surfaces or fine features Package contains: you get 8 pieces of stainless steel cleaning brushes with 8 different sizes, all of them have 1/4 inch hex shank, which can be applied on ports, tubes, bearings and other common wire brush applications, enough quantity for your need Quality materials: these bore brushes are made of stainless steel and brass copper, strong and , which can clean rust and detail completely; Twisted wire is for increased cleaning action, and abrasive Suitable occasions: these wire bore brushes can be applied in your car, garage, and kitchen, for cleaning, polishing, painting, or rust removal in automotive, fabrication, machining and smiting applications and more, Weight: 0.35935348706 Pounds, Manufacturer: Deechate